EP0202482A1 - Pharmacologisch aktive Propionylanilide - Google Patents

Pharmacologisch aktive Propionylanilide Download PDF

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Publication number
EP0202482A1
EP0202482A1 EP86105409A EP86105409A EP0202482A1 EP 0202482 A1 EP0202482 A1 EP 0202482A1 EP 86105409 A EP86105409 A EP 86105409A EP 86105409 A EP86105409 A EP 86105409A EP 0202482 A1 EP0202482 A1 EP 0202482A1
Authority
EP
European Patent Office
Prior art keywords
formula
reaction
acids
reactive derivative
iii
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP86105409A
Other languages
English (en)
French (fr)
Other versions
EP0202482B1 (de
Inventor
Egidio Molinari
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Erregierre Industria Chimica SpA
Original Assignee
Erregierre Industria Chimica SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Erregierre Industria Chimica SpA filed Critical Erregierre Industria Chimica SpA
Priority to AT86105409T priority Critical patent/ATE56445T1/de
Publication of EP0202482A1 publication Critical patent/EP0202482A1/de
Application granted granted Critical
Publication of EP0202482B1 publication Critical patent/EP0202482B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D295/00—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
    • C07D295/16—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms acylated on ring nitrogen atoms
    • C07D295/18—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms acylated on ring nitrogen atoms by radicals derived from carboxylic acids, or sulfur or nitrogen analogues thereof
    • C07D295/182—Radicals derived from carboxylic acids
    • C07D295/185—Radicals derived from carboxylic acids from aliphatic carboxylic acids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P11/00—Drugs for disorders of the respiratory system
    • A61P11/14—Antitussive agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/04—Centrally acting analgesics, e.g. opioids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]

Definitions

  • This invention relates to new propionylanilides, and to the relative salts of addition, which possess useful pharmacological properties.
  • the invention also relates to the process for preparing said propionylanilides and the relative salts of addition.
  • the invention relates to propionylanilides and to the relative salts of addition with physiologically compatible inorganic or organic acids, having the following general formula: in which R is a radical chosen from the group consisting of 4-isobutylphenyl, 3-benzoylphenyl, 6-methoxy-2-naphthyl and 2-fluoro-4-diphenyl.
  • Aryl-propionic acids of general formula: in which R, represents an aryl group and in particular has the same meaning as R, are known to possess anti-inflammatory, analgesic and antipyretic activity.
  • the propionylanilides of formula (I) according to the present invention are prepared by reacting a reactive derivative of the acids of formula: with an aniline derivative of formula: in a reaction medium consisting of an inert organic solvent.
  • a halide advantageously the chloride, of the acid of formula (III) is reacted with an analine derivative of formula (IV).
  • the reaction medium consists of an inert organic solvent such as carbon tetrachloride or dichloroethane, under substantially anhydrous conditions.
  • the reaction is preferably conducted in the presence of acid acceptors such as aliphatic, aromatic and/or heterocyclic tertiary amines, for example trimethylamine, triethylamine and pyridine, which can also form the reaction medium.
  • the ratio of the halide of the acid of formula (III) to the aniline derivative of formula (IV) is substantially equimolar and preferably between 1:0.9 and 1:1.1.
  • the tertiary amine is preferably used in excess over the acid chloride.
  • the halide of the acid of formula (III) is added to the solution of the aniline derivative of formula (IV) in an organic solvent, under agitation and at low feed rate so as not to exceed a temperature of 50 ° C, the temperature preferably being maintained between 5 ° C and 30 ° C.
  • reaction mixture is reacted with an aqueous solution of sulphuric acid containing between 50 and 200 g/1 of H 2 SO 4 , and the sulphuric solution is alkalified with a 30 weight% NaOH solution which is added slowly so as not to exceed a temperature of 25 ° C.
  • the product which separates is extracted by treatment with dichloroethane, and the organic phase is washed with water until neutral and is dried under vacuum.
  • the residue is dissolved in ligroin and the solution is filtered and preferably treated with a physiologically compatible inorganic or organic acid to separate the product in the form of a salt of addition, for example as the hydrochloride, which is a white solid generally poorly solublein water, in ether and in other apolar solvents, but soluble in dimethylformamide.
  • a physiologically compatible inorganic or organic acid for example as the hydrochloride, which is a white solid generally poorly solublein water, in ether and in other apolar solvents, but soluble in dimethylformamide.
  • the compounds according to the present invention exhibit anti-inflammatory, analgesic and/or antipyretic activity, in addition to antitussive activity.
  • the anti-inflammatory activity was determined by the carrageen- induced edema test in the rat, in accordance with Winter et al. (1962).
  • the analgesic activity was determined by the hot plate test on the rat in accordance with Eddy and Leinbach (1953), using the same administration scheme as heretofore described.
  • the antipyretic activity was determined by the test of Glenn et al., (1973) carried out on the rat at a dose of 3.7 mg/kg by oral administration.
  • the antitussive activity was determined by the test involving experimental cough induction in the rat by citric acid in accordance with Engelhorm and Puschman (1963).
  • the average percentage change in the number of coughs recorded 30 minutes after treatment was -40% at 35 mg/kg and -48% at 70 mg/kg as mean values.
  • the addition is carried out slowly so that the temperature does not exceed 20 ° C.
  • the reaction mixture is kept at 20°C for one hour under agitation, and is then extracted repeatedly with a sulphuric acid solution containing 100 g/1 of H 2 SO 4 .
  • the sulphuric solution is alkalified with 30 weighty sodium hydroxide solution without exceeding 20-25°C, and the product which separates is extracted with dichloroethane.
  • the organic phase is washed with water until neutral, dried over anhydrous sodium sulphate and evaporated to dryness under vacuum at ambient temperature.
  • the 4-isobutylphenyl-propionylanilide hydrochloride precipitates as a crystalline white solid, and is filtered off, washed with ligroin and dried under vacuum at 50°C.

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Veterinary Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Pain & Pain Management (AREA)
  • Biomedical Technology (AREA)
  • Neurosurgery (AREA)
  • Neurology (AREA)
  • Rheumatology (AREA)
  • Pulmonology (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Saccharide Compounds (AREA)
EP86105409A 1985-05-15 1986-04-18 Pharmacologisch aktive Propionylanilide Expired - Lifetime EP0202482B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86105409T ATE56445T1 (de) 1985-05-15 1986-04-18 Pharmacologisch aktive propionylanilide.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT20726/85A IT1191617B (it) 1985-05-15 1985-05-15 Propionilanilidi farmacologicamente attive
IT2072685 1985-05-15

Publications (2)

Publication Number Publication Date
EP0202482A1 true EP0202482A1 (de) 1986-11-26
EP0202482B1 EP0202482B1 (de) 1990-09-12

Family

ID=11171140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105409A Expired - Lifetime EP0202482B1 (de) 1985-05-15 1986-04-18 Pharmacologisch aktive Propionylanilide

Country Status (11)

Country Link
US (1) US4639449A (de)
EP (1) EP0202482B1 (de)
JP (1) JPS61263966A (de)
AT (1) ATE56445T1 (de)
CA (1) CA1260470A (de)
DE (1) DE3674060D1 (de)
DK (1) DK222886A (de)
ES (1) ES8706653A1 (de)
IT (1) IT1191617B (de)
NO (1) NO861917L (de)
PT (1) PT82535B (de)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769408A (en) * 1965-06-08 1973-10-30 Boehringer Sohn Ingelheim Pharmaceutical compositions containing a halo-substituted 2-amino-benzylamine-morpholide or a salt thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1518375A1 (de) * 1965-06-08 1969-08-14 Thomae Gmbh Dr K Verfahren zur Herstellung von neuen 2-Amino-halogenbenzylaminen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769408A (en) * 1965-06-08 1973-10-30 Boehringer Sohn Ingelheim Pharmaceutical compositions containing a halo-substituted 2-amino-benzylamine-morpholide or a salt thereof

Also Published As

Publication number Publication date
DK222886D0 (da) 1986-05-14
IT1191617B (it) 1988-03-23
PT82535A (en) 1986-06-01
DK222886A (da) 1986-11-16
NO861917L (no) 1986-11-17
JPS61263966A (ja) 1986-11-21
DE3674060D1 (de) 1990-10-18
ES8706653A1 (es) 1987-07-01
US4639449A (en) 1987-01-27
PT82535B (en) 1987-09-23
ES554933A0 (es) 1987-07-01
EP0202482B1 (de) 1990-09-12
ATE56445T1 (de) 1990-09-15
CA1260470A (en) 1989-09-26
IT8520726A0 (it) 1985-05-15

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